二.数据清洗:下载后解压缩,然后按以下代码清洗表达数据, ###表达文件的提取和长宽转换rm(list= ls())library(data.table)library(dplyr)library(tibble)library(tidyr)expr <- fread('exp_seq.PACA-AU.tsv',data.table = F)%>%dplyr::select(icgc_specimen_id,gene...